I saw that link. Its just a spoof someone did. I remember when I was abouy 13 I'd tune in to WWV on my shortwave receiver and try to start my watch tight at the minute so I'd be perfectly in sync with WWV. We didn't ahve a lot to do out in the country.

I have a clock that tunes into WWV and automatically makes sure that it is displaying the correct time every 5 minutes, cool huh.

I think your clock actually receives WWVB (WWV Binary) which outputs the time in Binary Coded Decimal (BCD). Also, it synchronizes only once per day, if that much. The format of the WWVB signal makes syncing every 5 minutes impractical.

Even on commercial equipment where I set the time sync via NTP, we only sync once per day or so.